The girl, identified by police as Vaillant Ricquina, was taken to the Joe DiMaggio Children's Hospital in stable condition and is expected to be okay.

On Wednesday, police arrested Vladimir Cornielus, 19, in the crime. Cornielus, of Opa-locka, is charged with armed robbery and aggravated battery, police said.

According to police, Cornielus and another man, identified only as "Ziggy," approached a man in the park and demanded his property at gunpoint. As they fled on foot they fired four gunshots, police said.

Ricquina, who was walking in the park, was struck by a stray bullet. The robbery victim wasn't injured.

Police are still looking for "Ziggy," who is described as a black male in his 20s.

Anyone with information is asked to call Miami-Dade Crime Stoppers at 305-471-TIPS.